Fabrication of Nanoporous Copper Ribbons through Dealloying of Al-Cu-Mn Alloys

Abstract:

We present a new Al-Cu-Mn system to fabricate nanoporous copper ribbons by dealloying. The microstructures of the nanoporous copper ribbons are characterized using X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The results show that the compositions of the melt-spun Al-Cu-Mn alloys have an important effect on the dealloying process and microstructures of the nanoporous copper ribbons. The melt-spun Cu₃₀Al₄₀Mn₃₀, Cu₃₀Al₃₅Mn₃₅, Cu₃₀Al₃₀Mn₄₀ and Cu₃₀Al₂₅Mn₄₅ (at.%) alloys can completely form a bicontinuous interpenetrating ligament-channel structure. Compared with other alloys, the dealloying of Cu₃₀Al₄₀Mn₃₀ alloys is more difficult. In addition, for Cu₃₀Al₃₅Mn₃₅ and Cu₃₀Al₃₀Mn₄₀ alloys, porous structures are relatively uniform. But for the Cu₃₀Al₂₅Mn₄₅ alloys, porous structure is not uniform, occurring aggregation phenomenon.

• Periodical: Key Engineering Materials (Volume 636)
• Pages: 111-114
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.636.111
• Online since: December 2014
• Authors: Hua Wei Jiang, Jie Zhang, Mei Li, Hao Ran Geng*, Min Zuo
• Keywords: Composition, Dealloying, Microstructure, Nanoporous Copper

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